BENTELER PreFiS – Bonds you can trust

How can you connect tubes when there’s only a small space to operate in? What can you do if welding is too risky? How can you create simply tight bonds easily? BENTELER PreFiS consists of metallically sealing cylinders and has the answer. It is a smart solution for strong tube bonds. Without welding. In just seconds. Simply tight. And the best thing is: you can do it yourself.

Whether for high-pressure fire-extinguishing systems in cruise ships, tunnels or hospitals, BENTELER PreFiS offers many advantages:

  • Unique design with four inner metal rings keeps every tube bonded, even under tough conditions
  • Certified for extreme pressures up to 630 bar
  • Can easily withstand commonly used chemicals and is also diffusion-resistant
  • Advanced press tool is lighter and has vastly improved ergonomics
  • Easy to prepare
  • Reduces cycle times
  • No special trainings required for installation
  • Saves your time
  • A complete solution unlike any other
  • Our experienced specialists work closely with leading steel tube manufacturers
  • Together we will find the best steel tubes for your individual requirements
  • Compatible with BENTELER PreFiS press fittings
  • Test the tube bonds you need under various conditions in advance
  • You can be absolutely sure they will work perfectly
  • Our network of engineers continuously improve our press fittings




- Carbon steel

- Stainless steel

Body:  1.0570; Press ring sets: 42CrMo4 (1.7225, 1.7227)

Body: 1.4404, 1.4571; Press ring sets: 42CrMo4 (1.7225, 1.7227)

Pipe diameter

(acc. to DIN/EN and ASTM)

- Carbon steel

- Stainless steel

10.0 – 88.9 mm

10.0 – 76.1 mm


- Carbon steel

- Stainless steel

up to 630 bar operating pressure

up to 260 bar operating pressure


-55°C - 400°C (depending on approval)